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Lesson: Geometry Challenging - 23

Distances On The Coordinate Plane, continued

[Page 23 of 32]
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What if we are asked to find the distance between two points on the coordinate plane that do not share a coordinate? We have to use another approach.

First, we draw a right triangle, setting the distance between the two points to be the hypotenuse.

We then use the Pythagorean theorem and our knowledge of triangles to find the length of that hypotenuse.

Task: Let's find the distance between the points (–5, – 3) and (7, –12). We can draw lines perpendicular to the x and y-axes, plus one directly between the points, to create a right triangle. Now, use what you've just learned to find the distances between the points that share coordinates. These are the legs of the triangle. Then, use your knowledge of triangles to find the answer. Type in your answer, and then click Continue.

Distance between (–5, –3) and (7, –12) =

Countinue

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